how to create a login with javascript code example

Example 1: html login page

<html>
<head>
<title>Account</title>
<style>
body
{
	background-color:#ffda08;
}
table
{
	border:1px white;
	margin-top:200px;
	margin-left:500px;
	background-color:white;
	padding:20px
}
#btn
{
	width:200px;
	height:50px;
	background-color:#1ee3d2;
}

</style>
</head>
<body>
	<form name=frmNewAcc>
		<table border=0 cellspacing=5px>
	<tr>
		<th colspan=3><input class=in =text name=txtuname placeholder="Enter your account name"></th>
	</tr>
	<tr>
		<th colspan=3><input class=in type=password name=txtupass placeholder="Enter your new password"></th>
	</tr>
	<tr>
		<th colspan=3><input  class=in type=password name=txtuconfirmpass placeholder="Enter confirmed password"></th>
	</tr>
	<tr>
		<th colspan=3><input id=btn type=button value="Create new account"></th>
		<a href="Login task 1.html">Go back to login</a>
	</tr>

	
</table>
</form>
</body>
</html>

Example 2: html login scripts

<form action="action_page.php" method="post">
  <div class="imgcontainer">
    <img src="img_avatar2.png" alt="Avatar" class="avatar">
  </div>

  <div class="container">
    <label for="uname"><b>Username</b></label>
    <input type="text" placeholder="Enter Username" name="uname" required>

    <label for="psw"><b>Password</b></label>
    <input type="password" placeholder="Enter Password" name="psw" required>

    <button type="submit">Login</button>
    <label>
      <input type="checkbox" checked="checked" name="remember"> Remember me
    </label>
  </div>

  <div class="container" style="background-color:#f1f1f1">
    <button type="button" class="cancelbtn">Cancel</button>
    <span class="psw">Forgot <a href="#">password?</a></span>
  </div>
</form>